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The FAST Galactic Plane Pulsar Snapshot Survey. II. Discovery of 76 Galactic Rotating Radio Transients and the Enigma of RRATs

文献类型：期刊论文

作者Zhou, D. J.2,3; Han, J. L.2,3; Xu, Jun2; Wang, Chen2; Wang, P. F.2; Wang, Tao2,3; Jing, Wei-Cong2,3; Chen, Xue2,3; Yan, Yi2,3; Su, Wei-Qi.2,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2023-10-01
卷号23期号:10页码:104001
关键词(stars:) pulsars: general surveys methods: data analysis
ISSN号1674-4527
DOI10.1088/1674-4527/accc76
产权排序5
英文摘要We have carried out the Galactic Plane Pulsar Snapshot (GPPS) survey by using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), the most sensitive systematic pulsar survey in the Galactic plane. In addition to more than 500 pulsars already discovered through normal periodical search, we report here the discovery of 76 new transient radio sources with sporadic strong pulses, detected by using the newly developed module for a sensitive single-pulse search. Their small DM values suggest that they all are Galactic rotating radio transients (RRATs). They show different properties in the follow-up observations. More radio pulses have been detected from 26 transient radio sources but no periods can be found due to a limited small number of pulses from all FAST observations. The follow-up observations show that 16 transient sources are newly identified as being the prototypes of RRATs with a period already determined from more detected sporadic pulses, and 10 sources are extremely nulling pulsars, and 24 sources are weak pulsars with sparse strong pulses. On the other hand, 48 previously known RRATs have been detected by the FAST, either during verification observations for the GPPS survey or through targeted observations of applied normal FAST projects. Except for one RRAT with four pulses detected in a session of 5-minute observation and four RRATs with only one pulse detected in a session, sensitive FAST observations reveal that 43 RRATs are just generally weak pulsars with sporadic strong pulses or simply very nulling pulsars, so that the previously known RRATs always have an extreme emission state together with a normal hardly detectable weak emission state. This is echoed by the two normal pulsars J1938+2213 and J1946+1449 with occasional brightening pulses. Though strong pulses of RRATs are very outstanding in the energy distribution, their polarization angle variations follow the polarization angle curve of the averaged normal pulse profile, suggesting that the predominant sparse pulses of RRATs are emitted in the same region with the same geometry as normal weak pulsars.
WOS关键词I. SURVEY DESCRIPTION ; GREEN BANK ; GLITCH ACTIVITY ; REAL-TIME ; BURSTS ; POLARIZATION ; SEARCHES ; EMISSION ; INTERSTELLAR ; CLASSIFIER
资助项目Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC)[11988101] ; National Natural Science Foundation of China (NSFC)[11833009] ; Key Research Program of the Chinese Academy of Sciences[QYZDJ-SSW-SLH021] ; Cultivation Project for the FAST scientific Payoff and Research Achievement of CAMS-CAS ; NSFC[U2031115] ; National SKA program of China[2020SKA0120200] ; Guangzhou Science and Technology Project[202102010466]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001122280500001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; Key Research Program of the Chinese Academy of Sciences ; Cultivation Project for the FAST scientific Payoff and Research Achievement of CAMS-CAS ; NSFC ; National SKA program of China ; Guangzhou Science and Technology Project
源URL[http://ir.xao.ac.cn/handle/45760611-7/5646]  
专题脉冲星研究团组
科研仪器设备产出_我台利用FAST观测数据文章
通讯作者Han, J. L.
作者单位1.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
6.Natl Astron Data Ctr, Great Bay Area, Guangzhou 510006, Peoples R China
7.Guangzhou Univ, Sch Phys & Mat Sci, Dept Astron, Guangzhou 510006, Peoples R China
8.Southwest Univ, Sch Phys Sci & Technol, Chongqing 400715, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, D. J.,Han, J. L.,Xu, Jun,et al. The FAST Galactic Plane Pulsar Snapshot Survey. II. Discovery of 76 Galactic Rotating Radio Transients and the Enigma of RRATs[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2023,23(10):104001.
APA Zhou, D. J..,Han, J. L..,Xu, Jun.,Wang, Chen.,Wang, P. F..,...&You, Xiao-Peng.(2023).The FAST Galactic Plane Pulsar Snapshot Survey. II. Discovery of 76 Galactic Rotating Radio Transients and the Enigma of RRATs.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,23(10),104001.
MLA Zhou, D. J.,et al."The FAST Galactic Plane Pulsar Snapshot Survey. II. Discovery of 76 Galactic Rotating Radio Transients and the Enigma of RRATs".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 23.10(2023):104001.

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